Originally Posted by
smashdn
Waited too long to be able to edit above, but was going to add. I think I have one "buzzer" in the controls. Whether it is overheat or low oil or whatever other alarm functions I have, it makes the same sound. I will dig into my manual and try to figure out what the outputs are (conditions) that are triggering the alarm.
Let's say though it is the overheat alarm. It could be bad sensor - should be eliminated with new one. Could be the actual wires for the sensor shorting together and simulating an overheat alarm. Could be an actual overheat condition - caused by low water flow (I've replaced the impeller and impeller housing and taken the head off to verify the passages are clear. Noticed no reduced flow at the tell-tale. Installed a thermostat where I didn't have one before. Replaced thermostat housing gasket.) Could be an actual overheat condition - caused by low oil flow. (I drained the tank and made sure the level sensor was functioning and screen was not clogged. Maybe I got air in the system doing that? I see there is maybe an air bleed screw that can be utilized to purge air.) Pump runs off of the crankshaft. I will have to dig to make sure everything there is behaving.
It seems odd to me that I have the alarm when the motor is not really warmed up yet. Alarm went off right after launching while running at the courtesy dock. I idle away towards main river channel and it continues. Give throttle it bogs due to the limp mode feature. Eventually it "busts" out of limp mode and I can get on plane. Run WOT no issue, strong stream at tell-tale. Throttle down to idle and have no issues, no alarms. Supposedly you send more oil with more throttle as it "opens" a port wide open to flow that oil.
I can say this; nothing I have replaced (impeller rebuild kit, thermostat, temp sensor) has helped.